No person shall engage in the business of drain layer without first having obtained a drain layer's license; provided, however, that a duly licensed plumber or plumbing contractor shall not require a drain layer's license to engage in the installation, maintenance or repair of plumbing as defined in Chapter 18-29.
(Added Coun. J. 12-12-01, p. 76426, § 1; Amend Coun. J. 10-14-21, p. 37722, Art. XIV, § 2)